<!DOCTYPE html>
<title>ref for nested iframes with css zoom</title>
<link rel="author" title="Yotam Hacohen" href="mailto:yotha@chromium.org">
<link rel="author" title="Stefan Zager" href="mailto:szager@chromium.org">
<link rel="author" title="Google" href="http://www.google.com/">
<link rel="help" href="https://drafts.csswg.org/css-viewport/">

<style>
body {
  columns: 2;
  --iframe-width: 256px;
  --iframe-height: 128px;
  --scale: 1;
}
iframe {
  border: none;
  width: calc(var(--iframe-width) * var(--scale));
  height: calc(var(--iframe-height) * var(--scale));
}
.scale {
  --scale: 1.5;
}
</style>

<iframe id="baseline-ref" src="../resources/nested-iframe.html" scrolling="no"></iframe>
<iframe id="zoom-child-ref" src="../resources/nested-iframe.html?subscale=2" scrolling="no"></iframe>
<iframe id="zoom-top-ref" class="scale" src="../resources/nested-iframe.html?topscale=1.5" scrolling="no"></iframe>
<iframe id="zoom-top-child-ref" class="scale" src="../resources/nested-iframe.html?topscale=1.5&subscale=2" scrolling="no"></iframe>
